03-12-2012, 10:36 PM
I posted a few weeks back when I had similar problems. Turned out to be 5 years of accumulated dust blocking the heatsink. I removed the fan, vacuumed out the dust, reassembled, and internal temperatures dropped like a rock. Kid of an involved procedure, but easier than reattaching the heatsink and just as effective. If it's never been opened and cleaned that could be the cause.